Paul, Shell makes an oil for use in VDG's called Diala it is a full
dielectric.
I imagine the price is high but no worse than Freon.
Shell has been in this business for years and has never produced an oil
containing PCB's like GE and others, we use the stuff in our VDG.
Zig

Paul Nord wrote:

> Short query:
> I need a liquid that won't conduct then subjected to about 300kV over a 1
> meter length of tubing. It needs to have the viscosity similar to water.